A blue sign with a diagram showing a branch off the road ahead and the following text.
Forward destinations: Caerdydd; Cardiff; Port Talbot.
Exit destinations: Castell-nedd; Neath; Merthyr Tudful; Merthyr Tydfil; A465.
Junction number: 43.
The dramatic A465 Heads of the Valleys Road stretches east from here, now a fast expressway that will beat the M4 if your destination is the English Midlands.